CVE-2025-47548: Activity Link Preview SSRF Vulnerability

CVE-2025-47548 Overview

CVE-2025-47548 is a Server-Side Request Forgery (SSRF) vulnerability [CWE-918] affecting the Wbcom Designs Activity Link Preview For BuddyPress WordPress plugin. The flaw impacts all plugin versions up to and including 1.4.4. An unauthenticated remote attacker can coerce the vulnerable WordPress server into issuing arbitrary HTTP requests to attacker-chosen destinations. This includes internal network resources, cloud metadata endpoints, and other services normally unreachable from the public internet. The vulnerability requires no privileges and no user interaction, and it can be exploited over the network with low complexity.

Critical Impact
An unauthenticated attacker can abuse the link preview functionality to reach internal services, exfiltrate sensitive metadata, and pivot deeper into hosting infrastructure.

Affected Products

Wbcom Designs Activity Link Preview For BuddyPress plugin for WordPress
All versions from initial release through 1.4.4
WordPress sites running BuddyPress with this plugin enabled

Discovery Timeline

2025-05-07 - CVE-2025-47548 published to the National Vulnerability Database
2026-04-23 - Last updated in NVD database

Technical Details for CVE-2025-47548

Vulnerability Analysis

The vulnerability resides in the activity link preview feature provided by the plugin. The feature accepts a URL submitted by a user and retrieves remote content to render a preview card within BuddyPress activity streams. The plugin does not adequately validate or restrict the destination of these outbound requests. An attacker can supply URLs pointing to internal IP ranges, loopback addresses, or cloud provider metadata services such as http://169.254.169.254/.

Because the request originates from the WordPress server, the attacker gains an indirect read primitive into network segments the server can reach. Depending on the hosting environment, this can expose AWS IAM credentials, internal admin panels, databases, and unauthenticated management interfaces. Successful exploitation can compromise confidentiality, integrity, and availability of the host system and adjacent resources.

Root Cause

The plugin fails to enforce an allowlist on URL schemes and host destinations before invoking its HTTP client. Input validation does not block private address ranges (RFC 1918), link-local addresses, or non-HTTP schemes. The fetched content is also returned to the requester, enabling response-based data exfiltration.

Attack Vector

The attack is network-based and requires no authentication. The attacker submits a crafted URL through the link preview endpoint exposed by the plugin. The WordPress server fetches the URL server-side and returns metadata or response content. See the Patchstack SSRF Vulnerability Report for additional technical context.

No verified proof-of-concept code is publicly available. The vulnerability mechanism follows the standard SSRF pattern: untrusted URL input passed to a server-side HTTP fetcher without destination filtering. EPSS data places exploitation probability at 0.191%.

Detection Methods for CVE-2025-47548

Indicators of Compromise

Outbound HTTP requests from the WordPress server to internal IP ranges, 127.0.0.1, or 169.254.169.254
Unusual access patterns to the plugin's link preview AJAX or REST endpoints from unauthenticated clients
WordPress access logs showing repeated preview requests with varying URL parameters targeting non-public hostnames
Outbound DNS queries from the web server to attacker-controlled domains used for SSRF blind detection

Detection Strategies

Inspect web server access logs for requests to plugin endpoints containing url= parameters referencing private, loopback, or metadata addresses
Monitor egress traffic from WordPress hosts for connections to 169.254.169.254, localhost, or RFC 1918 ranges that do not match legitimate application flow
Correlate plugin endpoint hits with subsequent outbound connections to identify SSRF chains

Monitoring Recommendations

Enable verbose logging on the WordPress site and ship logs to a centralized SIEM for correlation
Alert on any process spawned by the web server user making connections to cloud metadata endpoints
Track plugin version inventory across WordPress estates to identify unpatched installations

How to Mitigate CVE-2025-47548

Immediate Actions Required

Identify all WordPress sites running the Wbcom Designs Activity Link Preview For BuddyPress plugin at version 1.4.4 or earlier
Disable or uninstall the plugin until a patched version is confirmed available from the vendor
Restrict outbound network access from WordPress servers to only required destinations using host or network firewall rules
Block access to cloud metadata services from web application workloads, or enforce IMDSv2 on AWS instances

Patch Information

At the time of NVD publication, no fixed version is referenced in the public advisory. Monitor the Patchstack SSRF Vulnerability Report and the WordPress plugin repository for an updated release above 1.4.4. Apply the vendor patch immediately once published.

Workarounds

Deactivate the plugin in wp-admin until a fixed version is released
Place a Web Application Firewall (WAF) rule in front of the site to block requests to the link preview endpoint containing private IP ranges or metadata hostnames
Configure egress filtering so the WordPress PHP worker cannot reach 169.254.169.254, 127.0.0.0/8, 10.0.0.0/8, 172.16.0.0/12, or 192.168.0.0/16
Enforce IMDSv2 on AWS EC2 instances hosting WordPress to require session tokens for metadata access

bash

# Example iptables egress rules to block SSRF targets from the web server
iptables -A OUTPUT -d 169.254.169.254 -j REJECT
iptables -A OUTPUT -d 127.0.0.0/8 ! -o lo -j REJECT
iptables -A OUTPUT -d 10.0.0.0/8 -j REJECT
iptables -A OUTPUT -d 172.16.0.0/12 -j REJECT
iptables -A OUTPUT -d 192.168.0.0/16 -j REJECT